Patents by Inventor Jeong S. Lee
Jeong S. Lee has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20100130926Abstract: A multilayer balloon catheter is formed to have an inner layer and an outer layer, where the outer layer is adapted to resist shredding and premature rupture. The outer layer is formed of a material having a glass transition temperature that is lower than the transition or melting temperature of the inner layer. By forming the balloon on a mold at a temperature between the glass transition temperature of the outer layer and the glass transition or melting temperature of the inner layer, the outer layer will undergo a thermal relaxation that will alleviate some of the axial orientation of the polymer chains that develop during the formation of the multilayer balloon. This relaxation leads to a resistance to shredding when the balloon is expanded during operation.Type: ApplicationFiled: June 5, 2009Publication date: May 27, 2010Applicant: ABBOTT CARDIOVASCULAR SYSTEMS, INC.Inventors: JEONG S. LEE, FORTINO VASQUEZ FLORES
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Publication number: 20100130925Abstract: A balloon catheter having a multilayer catheter shaft is formed to have an inner layer and an outer layer, where the inner layer and outer layer are selected from materials that enhance the pushability of the catheter while preserving the flexibility. Using a combination of a high Shore D duromater value material and a lower Shore D duromater value material, various combinations of multilayer catheter shafts are disclosed utilizing different glass transition temperatures and block copolyamides to obtain the desired characteristics.Type: ApplicationFiled: June 5, 2009Publication date: May 27, 2010Applicant: ABBOTT CARDIOVASCULAR SYSTEMS, INC.Inventors: THOMAS HASLINGER, Jeong S. Lee, Neftali Fernandez, John Simpson
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Publication number: 20100130927Abstract: combination of at least two polyamides. The catheter component can be made from a blend of the two polyamides, or a co-extrusion of the two polyamides with an inner layer and an outer layer. The first polyamide has a Shore D durometer hardness of more than seventy seven (77), and can be selected from various transparent amorphous nylons having an amorphous segment such as an aliphatic segment, an aromatic segment, or a cycloaliphatic segment. The second polyamide has a lower durometer hardness than the first polyamide, and preferably less than 73, and can be a block copolymer of nylon and polytetramethylene glycol. Both polyamides have the same amide block or segment, e.g. nylon 12. Adding small amounts of the high hardness polyamide can reinforce the low polyamide at the amorphous segments, thereby increasing the overall strength of the material.Type: ApplicationFiled: November 26, 2008Publication date: May 27, 2010Applicant: ABBOTT CARDIOVASCULAR SYSTEMS INC.Inventor: JEONG S. LEE
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Publication number: 20100122768Abstract: One aspect of the invention is directed to a balloon catheter with a multilayered polymeric sleeve at the rapid exchange intermediate section, having an outer layer formed of a polymer with a relatively low processing temperature (i.e., melting temperature for semi-crystalline polymers or glass transition temperature for amorphous polymers), and having an inner layer.Type: ApplicationFiled: January 14, 2010Publication date: May 20, 2010Applicant: ADVANCED CARDIOVASCULAR SYSTEMS, INC.Inventor: Jeong S. Lee
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Patent number: 7662130Abstract: One aspect of the invention is directed to a balloon catheter with a multilayered polymeric sleeve at the rapid exchange intermediate section, having an outer layer formed of a polymer with a relatively low processing temperature (i.e., melting temperature for semi-crystalline polymers or glass transition temperature for amorphous polymers), and having an inner layer.Type: GrantFiled: August 2, 2005Date of Patent: February 16, 2010Assignee: Advanced Cardiovascular Systems, Inc.Inventor: Jeong S. Lee
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Publication number: 20090326574Abstract: A method of treating vulnerable plaque comprising intentionally damaging or rupturing the vulnerable plaque using a wingless balloon which is inflated from a wingless unexpanded diameter to a limited expanded diameter. This process produces significant increase in ECM synthesis at the site of the damage or rupture. As a result, the method strengthens the vulnerable plaque while minimizing or avoiding damage to the surrounding wall of the body lumen or damaging a stable plaque mistakenly believed to be a vulnerable plaque. The method of the invention is particularly useful in treating a fibroatheroma type of vulnerable plaque. In one embodiment, the balloon is self-limiting such that it expands compliantly at initial inflation pressures, and above nominal pressure it expands noncompliantly. In an alternative embodiment, the balloon is inflated using a diameter-limiting device, such as a device which limits the inflation pressure or the volume of inflation fluid in the balloon.Type: ApplicationFiled: June 17, 2009Publication date: December 31, 2009Inventors: Deborah L. Kilpatrick, Robert D. Ainsworth, Murthy V. Simhambhatla, Jeong S. Lee
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Publication number: 20090247946Abstract: A catheter having an multilayered shaft section with a first layer formed of a polyimide first material and a second layer formed of a second material. In a presently preferred embodiment, the polyimide material is a thermoset polyimide. However, in alternative embodiments, a thermoplastic polyimide is used. The thermoset polyimide has a very high glass transition temperature (Tg) of approximately 400° C. (as measured by differential scanning calorimetry), and excellent dimensional stability at the processing temperature of polyamides commonly used in catheter components. As a result, during formation and assembly of the catheter, production of a thin polyimide layer with controlled dimensions is facilitated. The polyimide has a high modulus and provides a thin walled yet highly pushable shaft section, while the second layer provides kink resistance. In one embodiment, the second material is selected from the group consisting of a polyamide material and a polyurethane material.Type: ApplicationFiled: June 3, 2009Publication date: October 1, 2009Applicant: ADVANCED CARDIOVASCULAR SYSTEMS, INC.Inventors: Jeong S. Lee, Edwin Wang, Roseminda J. White
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Publication number: 20090223624Abstract: A balloon catheter having a soft distal tip member having a non-tacky inner (liner) layer material and a soft flexible outer layer material, with both materials being readily thermally bondable to the catheter balloon.Type: ApplicationFiled: May 19, 2009Publication date: September 10, 2009Applicant: ABBOTT CARDIOVASCULAR SYSTEMS INC.Inventors: Jeong S. Lee, Kenneth L. Wantink
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Patent number: 7556634Abstract: A catheter having an multilayered shaft section with a first layer formed of a polyimide first material and a second layer formed of a second material. In a presently preferred embodiment, the polyimide material is a thermoset polyimide. However, in alternative embodiments, a thermoplastic polyimide is used. The thermoset polyimide has a very high glass transition temperature (Tg) of approximately 400° C. (as measured by differential scanning calorimetry), and excellent dimensional stability at the processing temperature of polyamides commonly used in catheter components. As a result, during formation and assembly of the catheter, production of a thin polyimide layer with controlled dimensions is facilitated. The polyimide has a high modulus and provides a thin walled yet highly pushable shaft section, while the second layer provides kink resistance. In one embodiment, the second material is selected from the group consisting of a polyamide material and a polyurethane material.Type: GrantFiled: January 18, 2005Date of Patent: July 7, 2009Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Jeong S. Lee, Edwin Wang, Roseminda J. White
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Patent number: 7553292Abstract: A method of treating vulnerable plaque comprising intentionally damaging or rupturing the vulnerable plaque using a wingless balloon which is inflated from a wingless unexpanded diameter to a limited expanded diameter. This process produces significant increase in ECM synthesis at the site of the damage or rupture. As a result, the method strengthens the vulnerable plaque while minimizing or avoiding damage to the surrounding wall of the body lumen or damaging a stable plaque mistakenly believed to be a vulnerable plaque. The method of the invention is particularly useful in treating a fibroatheroma type of vulnerable plaque. In one embodiment, the balloon is self-limiting such that it expands compliantly at initial inflation pressures, and above nominal pressure it expands noncompliantly. In an alternative embodiment, the balloon is inflated using a diameter-limiting device, such as a device which limits the inflation pressure or the volume of inflation fluid in the balloon.Type: GrantFiled: May 26, 2005Date of Patent: June 30, 2009Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Deborah L. Kilpatrick, Robert D. Ainsworth, Murthy V. Simhambhatla, Jeong S. Lee
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Patent number: 7549975Abstract: A balloon catheter having a soft distal tip member having a non-tacky inner (liner) layer material and a soft flexible outer layer material, with both materials being readily thermally bondable to the catheter balloon.Type: GrantFiled: April 20, 2007Date of Patent: June 23, 2009Assignee: Abbott Cardiovascular Systems, Inc.Inventors: Jeong S. Lee, Kenneth L. Wantink
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Patent number: 7532920Abstract: Apparatus and method to perform therapeutic treatment and diagnosis of a patient's vasculature through the use of an intravascular device having an optical fiber disposed therein. In an embodiment of this invention, the apparatus includes a therapeutic guidewire and at least one optical fiber disposed through the therapeutic guidewire, the optical fiber capable of providing diagnostic information before, during, and after the therapeutic treatment. In an embodiment, diagnostic information includes vessel and blood characteristics such as hemodynamic characteristics, hematological parameters related to blood and blood components, and thermal parameters of the vasculature.Type: GrantFiled: May 31, 2001Date of Patent: May 12, 2009Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Robert D. Ainsworth, Deborah Kilpatrick, Jeong S. Lee, Bridget A. Hurley, Jeffrey T. Ellis, Marc Jalisi, Florencia Lim, Chi Long
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Publication number: 20090062835Abstract: An elongated balloon catheter having a distal tip member on the distal end of the catheter and having a sleeve surrounding and secured at least to the proximal end of the distal tip member.Type: ApplicationFiled: November 14, 2008Publication date: March 5, 2009Applicant: ADVANCED CARDOVASCULAR SYSTEMS, INC.Inventors: Edwin Wang, Roseminda J. White, Jeong S. Lee, Tim Kitchen
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Publication number: 20090041923Abstract: A medical device having a lubricious coating on at least a section of the medical device, and a method of coating a medical device, the lubricious coating being a network of a hydrophilic compound cross-linked to itself and interlocked with a network of a cross-linked polymerized multifunctional monomer or polymer. The coating can include one or more agents which provide enhanced adhesion of the coating on the device, or which provide faster hydration of the coating and/or improved lubricity. Additionally, the lubricious coating can be provided with one or more therapeutic or diagnostic agents, and in one embodiment the agent elutes relatively quickly in a concentrated release from the lubricious coating upon hydration of the coating.Type: ApplicationFiled: August 6, 2007Publication date: February 12, 2009Applicant: ABBOTT CARDIOVASCULAR SYSTEMS INC.Inventors: Tung-Liang Lin, Jeong S. Lee, Emmanuel Biagtan, David Burkett
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Patent number: 7465311Abstract: An elongated balloon catheter having a distal tip member on the distal end of the catheter and having a sleeve surrounding and secured at least to the proximal end of the distal tip member.Type: GrantFiled: June 29, 2005Date of Patent: December 16, 2008Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Edwin Wang, Roseminda J. White, Jeong S. Lee, Tim Kitchen
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Publication number: 20080262470Abstract: A balloon catheter having a soft distal tip member having a non-tacky inner (liner) layer material and a soft flexible outer layer material, with both materials being readily thermally bondable to the catheter balloon.Type: ApplicationFiled: April 20, 2007Publication date: October 23, 2008Applicant: ABBOTT CARDIOVASCULAR SYSTEMSInventors: Jeong S. Lee, Kenneth L. Wantink
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Publication number: 20080245474Abstract: Medical devices, and particularly intracorporeal devices for therapeutic or diagnostic uses, having a component chemically modified by plasma polymerization. The medical device comprises a substrate with a plasma polymerized functionality bonded to a surface of at least a section thereof. The plasma polymerized film on a first component of the medical device allows for bonding an agent or a second component to the first component. In one embodiment, the plasma polymerized film facilitates fusion or adhesive bonding of a first component to a second component formed of a material which is dissimilar to, incompatible with, or otherwise not readily bondable to the substrate material of the first component. In another embodiment, a bioactive agent is bonded to the plasma polymerized film on the component, for presenting or delivering the bioactive agent within a body lumen of the patient.Type: ApplicationFiled: June 13, 2008Publication date: October 9, 2008Applicant: ADVANCED CARDIOVASCULAR SYSTEMS, INC.Inventors: Charles D. Claude, Jeong S. Lee
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Publication number: 20080221550Abstract: An infusion catheter and method, with an elongated shaft having a guidewire lumen which has a proximal section and a common distal section extending to a distal port at a distal end of the shaft, and an infusion lumen which is in fluid communication with the distal port of the guidewire lumen and which joins the common distal section of the guidewire lumen at a location distal to the guidewire proximal port. A restricted passage from the infusion lumen to the common distal section of the guidewire lumen has a smaller transverse dimension than the guidewire lumen and a guidewire slidably disposed in the guidewire lumen.Type: ApplicationFiled: March 5, 2007Publication date: September 11, 2008Applicant: ABBOTT CARDIOVASCULAR SYSTEMS, INC.Inventor: Jeong S. Lee
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Patent number: 7396582Abstract: Medical devices, and particularly intracorporeal devices for therapeutic or diagnostic uses, having a component chemically modified by plasma polymerization. The medical device comprises a substrate with a plasma polymerized functionality bonded to a surface of at least a section thereof. The plasma polymerized film on a first component of the medical device allows for bonding an agent or a second component to the first component. In one embodiment, the plasma polymerized film facilitates fusion or adhesive bonding of a first component to a second component formed of a material which is dissimilar to, incompatible with, or otherwise not readily bondable to the substrate material of the first component. In another embodiment, a bioactive agent is bonded to the plasma polymerized film on the component, for presenting or delivering the bioactive agent within a body lumen of the patient.Type: GrantFiled: April 6, 2001Date of Patent: July 8, 2008Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Charles D. Claude, Jeong S. Lee
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Publication number: 20080139897Abstract: An apparatus and method to perform therapeutic treatment and diagnosis of a patient's vasculature through the use of an intravascular device having an optical fiber disposed therein. In an embodiment, the apparatus includes an intravascular device to perform a therapeutic treatment and at least one optical fiber disposed through the intravascular device. The optical fiber is configured to provide diagnostic information before, during, and after the therapeutic treatment. In an embodiment, diagnostic information includes vessel and blood characteristics such as hemodynamic characteristics, hematological parameters related to blood and blood components, and thermal parameters of the vasculature.Type: ApplicationFiled: January 9, 2008Publication date: June 12, 2008Inventors: Robert D. Ainsworth, Deborah Kilpatrick, Jeong S. Lee, Bridget A. Hurley, Jeffrey T. Ellis